1862.] M. O. A. L. MORCh's review of the VERMETIDiE. 63 



This variety differs chiefly from the preceding in the colours being 

 stronger, the exterior side being of a deep chestnut-brown colour, and 

 the upper side of a bluish white, like the preceding forms, but much 

 more developed. A smaller specimen, attached to the same shell, 

 with agglutinated pebbles, differs chiefly from the type in being 

 thicker in the shell. 



? Var. ^. (Aletesi). 



T. solida, spiraliter torta, lateraliter affixa ; anfr. contigui, pla- 

 niuscidi, incumhentes, ohliqui, suturis dilatatis ; anfr. ultimus 

 longus, solutus, fere s emit eres, aperturam versus reflexus, Kris 

 longitudinalibus confertis, sape connatis et Iceviusculis, leviter 

 undulatis; ruga incrementi parvce, approximatce, suturam versus 

 incrassat<s, leviter sigmo'idece et scepe furcatce ; interstitia lira- 

 rum reticulato-scrobiculata, fasciis longitudinalibus angustis 

 approximatis 4-5 aurantiacis ; sutura alba ; anfr. ultimus 

 sordide livescens ; columella Candida, nitida, intus aperturam 

 versus fuscescens. 

 Diam. aperturse circ. 6 m. ; anfr. ult. 7| m. ; anfr. penult, circ. 

 10 m. 



Hab. ? (Mus. Cuming). 



This variety is not unlike Vermetus cercus, Carp., chiefly so in 

 shape ; but the sculpture and colour remind one of var. ?/. corallio- 

 fhila. The afiixed side is thinner, white, and shows marks of a pearl- 

 oyster. 



6. BivONiA CONSTRICTOR, Morch. 



T. crassa, repens, laqueatim contorta, sordide lactea, primum 

 roseola; anfr. convexiusculi ; latere externa dilatato; lircB lata, 

 parum prominentes, subapproximatce, versus marginem externum 

 omnino evanescentes ; rugcB incrementi prominentes, irregulares, 

 leviter sigmo'idece, in intersectionibus interdum obsoletissime 

 nodulosce ; anfr. ultimus pone aperturam contractus, breviter 

 cylindi'icus, varicibus duabus cequidistantibus crassis brevissimis 

 arcuatis ; intus fere ubique castanea ; apertura soluta, circu- 

 laris, peripheria interna alba. 



Diam. apert. 7 m. ; diam. anfr. ult. circ. 10-12 m. 



Serpula arenaiia, Bowd. Elements, ii. f. 130, non absimilis. 



Sab. Australia (Mus. Cuming). 

 ' One specimen, nearly half sunk in the surface of a calcareous con- 

 glomerate, with an imbedded spine oi an Echinus: it seems to be some- 

 what corroding. The last whorl shows two varices, the first at the 

 same distance from the second as that is from the aperture. The 

 figure quoted is not unlike the principal specimen in the group, but 

 the apertural tube is rather long. 



7. BlVONIA GOREENSIS, Gm. 



T. teres, cancellata, fiava, intus cornea, 8-9 pollices longa, striis 

 elevatis, longitudinalibus confertis (Gm). 



